Contact temperature

The contact temperature is the temperature at the point where two bodies with different temperatures touch. ${\displaystyle T_{K}}$

• For bodies made of the same material, it is the mean of the two temperatures.
• If the two bodies A and B are made of different materials, the contact temperature is determined by the heat penetration coefficient : ${\displaystyle b}$

${\displaystyle T_{K}={\frac {T_{A}\cdot b_{A}+T_{B}\cdot b_{B}}{b_{A}+b_{B}}}}$

With

• ${\displaystyle T_{K}}$= Contact temperature (in Kelvin or ° C)
• ${\displaystyle T_{A}}$ = Temperature of body A (in Kelvin or ° C)
• ${\displaystyle T_{B}}$ = Temperature of body B (in Kelvin or ° C).